How would Ayn Rand’s philosophy be summed up into a few sentences?

From her website:
"Ayn Rand wrote volumes urging people to be selfish.
What? Aren’t people already too selfish? Just do whatever you feel like, be a thoughtless jerk, and exploit people to get ahead. Easy, right? Except that acting thoughtlessly and victimizing others, Rand claims, is not in your self-interest.
What Rand advocates is an approach to life that’s unlike anything you’ve ever heard before. Selfishness, in her philosophy, means:
Follow reason, not whims or faith.
Work hard to achieve a life of purpose and productiveness.
Earn genuine self-esteem.
Pursue your own happiness as your highest moral aim.
Prosper by treating others as individuals, trading value for value.
At the dawn of our lives, writes Rand, we “seek a noble vision of man’s nature and of life’s potential.” Rand’s philosophy is that vision. Explore it for yourself.
Objectivism, a philosophy for living on earth."
Reference: https://www.aynrand.org/ideas/overview